Java FileDialog类代码示例

import java.awt.FileDialog; //导入依赖的package包/类
private File showFileDialog( FileDialog fileDialog, int mode ) {
    String oldFileDialogProp = System.getProperty("apple.awt.fileDialogForDirectories"); //NOI18N
    if( dirsOnly ) {
        System.setProperty("apple.awt.fileDialogForDirectories", "true"); //NOI18N
    }
    fileDialog.setMode( mode );
    fileDialog.setVisible(true);
    if( dirsOnly ) {
        if( null != oldFileDialogProp ) {
            System.setProperty("apple.awt.fileDialogForDirectories", oldFileDialogProp); //NOI18N
        } else {
            System.clearProperty("apple.awt.fileDialogForDirectories"); //NOI18N
        }
    }
    if( fileDialog.getDirectory() != null && fileDialog.getFile() != null ) {
        String selFile = fileDialog.getFile();
        File dir = new File( fileDialog.getDirectory() );
        return new File( dir, selFile );
    }
    return null;
}
 

import java.awt.FileDialog; //导入依赖的package包/类
public int showSaveDialog(Component parent) {
  final FileDialog fd = awt_file_dialog_init(parent);
  fd.setMode(FileDialog.SAVE);
  fd.setVisible(true);

  final int value;
  if (fd.getFile() != null) {
    cur = new File(fd.getDirectory(), fd.getFile());
    value = FileChooser.APPROVE_OPTION;
  }
  else {
    value = FileChooser.CANCEL_OPTION;
  }
  updateDirectoryPreference();
  return value;
}
 

import java.awt.FileDialog; //导入依赖的package包/类
/**
 * Show an open dialog with a file chooser set up according to the
 * parameters of this builder.
 * @return A file if the user clicks the accept button and a file or
 * folder was selected at the time the user clicked cancel.
 */
public File showOpenDialog() {
    JFileChooser chooser = createFileChooser();
    if( Boolean.getBoolean("nb.native.filechooser") ) { //NOI18N
        FileDialog fileDialog = createFileDialog( chooser.getCurrentDirectory() );
        if( null != fileDialog ) {
            return showFileDialog(fileDialog, FileDialog.LOAD );
        }
    }
    chooser.setMultiSelectionEnabled(false);
    int dlgResult = chooser.showOpenDialog(findDialogParent());
    if (JFileChooser.APPROVE_OPTION == dlgResult) {
        File result = chooser.getSelectedFile();
        if (result != null && !result.exists()) {
            result = null;
        }
        return result;
    } else {
        return null;
    }

}
 

import java.awt.FileDialog; //导入依赖的package包/类
/**
 * Show a save dialog with the file chooser set up according to the
 * parameters of this builder.
 * @return A file if the user clicks the accept button and a file or
 * folder was selected at the time the user clicked cancel.
 */
public File showSaveDialog() {
    JFileChooser chooser = createFileChooser();
    if( Boolean.getBoolean("nb.native.filechooser") ) { //NOI18N
        FileDialog fileDialog = createFileDialog( chooser.getCurrentDirectory() );
        if( null != fileDialog ) {
            return showFileDialog( fileDialog, FileDialog.SAVE );
        }
    }
    int result = chooser.showSaveDialog(findDialogParent());
    if (JFileChooser.APPROVE_OPTION == result) {
        return chooser.getSelectedFile();
    } else {
        return null;
    }
}
 

import java.awt.FileDialog; //导入依赖的package包/类
private FileDialog createFileDialog( File currentDirectory ) {
    if( badger != null )
        return null;
    if( !Boolean.getBoolean("nb.native.filechooser") )
        return null;
    if( dirsOnly && !BaseUtilities.isMac() )
        return null;
    Component parentComponent = findDialogParent();
    Frame parentFrame = (Frame) SwingUtilities.getAncestorOfClass(Frame.class, parentComponent);
    FileDialog fileDialog = new FileDialog(parentFrame);
    if (title != null) {
        fileDialog.setTitle(title);
    }
    if( null != currentDirectory )
        fileDialog.setDirectory(currentDirectory.getAbsolutePath());
    return fileDialog;
}
 

import java.awt.FileDialog; //导入依赖的package包/类
public int showOpenDialog(Component parent) {
  final FileDialog fd = awt_file_dialog_init(parent);
  fd.setMode(FileDialog.LOAD);
  System.setProperty("apple.awt.fileDialogForDirectories",
                     String.valueOf(mode == DIRECTORIES_ONLY));
  fd.setVisible(true);

  final int value;
  if (fd.getFile() != null) {
    cur = new File(fd.getDirectory(), fd.getFile());
    value = FileChooser.APPROVE_OPTION;
  }
  else {
    value = FileChooser.CANCEL_OPTION;
  }
  updateDirectoryPreference();
  return value;
}
 

import java.awt.FileDialog; //导入依赖的package包/类
public ExportMenuItem(final FlagFrame frame) {
	setText("Export...");
	if (!OSUtils.isMacOS()) setMnemonic(KeyEvent.VK_E);
	setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_S, InputUtils.META_MASK));
	if (frame == null) {
		setEnabled(false);
	} else {
		addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent event) {
				FileDialog fd = new FileDialog(frame, "Export", FileDialog.SAVE);
				fd.setVisible(true);
				if (fd.getDirectory() == null || fd.getFile() == null) return;
				File file = new File(fd.getDirectory(), fd.getFile());
				new ExportDialog(
					frame, frame.getParentFile(), frame.getFlag(), file,
					frame.getViewerWidth(), frame.getViewerHeight(), frame.getGlaze()
				).setVisible(true);
			}
		});
	}
}
 

import java.awt.FileDialog; //导入依赖的package包/类
public OpenMenuItem() {
	setText("Open...");
	if (!OSUtils.isMacOS()) setMnemonic(KeyEvent.VK_O);
	setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_O, InputUtils.META_MASK));
	addActionListener(new ActionListener() {
		public void actionPerformed(ActionEvent event) {
			FileDialog fd = new FileDialog(new Frame(), "Open", FileDialog.LOAD);
			fd.setVisible(true);
			if (fd.getDirectory() == null || fd.getFile() == null) return;
			File file = new File(fd.getDirectory(), fd.getFile());
			try {
				FileInputStream in = new FileInputStream(file);
				Flag flag = FlagParser.parse(file.getName(), in);
				in.close();
				String title = file.getName();
				if (flag.getName() != null) title += ": " + flag.getName();
				FlagFrame frame = new FlagFrame(title, file, flag);
				frame.setVisible(true);
			} catch (Exception e) {
				JOptionPane.showMessageDialog(null, "Error: " + e.getMessage(), "Open", JOptionPane.ERROR_MESSAGE);
			}
		}
	});
}
 

import java.awt.FileDialog; //导入依赖的package包/类
private void showNativeDialog() {
    String dirname = fd.getDirectory();
    // File path has a priority against directory path.
    String filename = fd.getFile();
    if (filename != null) {
        final File file = new File(filename);
        if (fd.getMode() == FileDialog.LOAD
            && dirname != null
            && file.getParent() == null) {
            // File path for gtk_file_chooser_set_filename.
            filename = dirname + (dirname.endsWith(File.separator) ? "" :
                                          File.separator) + filename;
        }
        if (fd.getMode() == FileDialog.SAVE && file.getParent() != null) {
            // Filename for gtk_file_chooser_set_current_name.
            filename = file.getName();
            // Directory path for gtk_file_chooser_set_current_folder.
            dirname = file.getParent();
        }
    }
    run(fd.getTitle(), fd.getMode(), dirname, filename,
        fd.getFilenameFilter(), fd.isMultipleMode(), fd.getX(), fd.getY());
}
 

import java.awt.FileDialog; //导入依赖的package包/类
@Override
public void init() {
    if (OSInfo.getOSType() != OSInfo.OSType.MACOSX) {
        Sysout.createDialogWithInstructions(new String[]{
                "Press PASS, this test is for MacOS X only."});
        return;
    }

    System.setProperty("apple.awt.use-file-dialog-packages", "true");

    setLayout(new GridLayout(1, 1));

    fd = new FileDialog(new Frame(), "Open");
    fd.setDirectory(APPLICATIONS_FOLDER);

    showBtn = new Button("Show File Dialog");
    showBtn.addActionListener(this);
    add(showBtn);
    String[] instructions = {
            "1) Click on 'Show File Dialog' button. A file dialog will come up.",
            "2) Navigate to the Applications folder if not already there",
            "3) Check that the application bundles can be selected and can not be navigated",
            "4) If it's true then the test passed, otherwise it failed."};
    Sysout.createDialogWithInstructions(instructions);
}
 

import java.awt.FileDialog; //导入依赖的package包/类
@Override
public void init() {
    if (OSInfo.getOSType() != OSInfo.OSType.MACOSX) {
        Sysout.createDialogWithInstructions(new String[]{
                "Press PASS, this test is for MacOS X only."});
        return;
    }

    System.setProperty("apple.awt.fileDialogForDirectories", "true");

    setLayout(new GridLayout(1, 1));

    fd = new FileDialog(new Frame(), "Open");

    showBtn = new Button("Show File Dialog");
    showBtn.addActionListener(this);
    add(showBtn);
    String[] instructions = {
            "1) Click on 'Show File Dialog' button. A file dialog will come up.",
            "2) Check that files can't be selected.",
            "3) Check that directories can be selected.",
            "4) Repeat steps 1 - 3 a few times for different files and directories.",
            "5) If it's true then the test passed, otherwise it failed."};
    Sysout.createDialogWithInstructions(instructions);
}
 

import java.awt.FileDialog; //导入依赖的package包/类
private void showNativeDialog() {
    String dirname = fd.getDirectory();
    // File path has a priority against directory path.
    String filename = fd.getFile();
    if (filename != null) {
        final File file = new File(filename);
        if (fd.getMode() == FileDialog.LOAD
            && dirname != null
            && file.getParent() == null) {
            // File path for gtk_file_chooser_set_filename.
            filename = dirname + (dirname.endsWith(File.separator) ? "" :
                                          File.separator) + filename;
        }
        if (fd.getMode() == FileDialog.SAVE && file.getParent() != null) {
            // Filename for gtk_file_chooser_set_current_name.
            filename = file.getName();
            // Directory path for gtk_file_chooser_set_current_folder.
            dirname = file.getParent();
        }
    }
    if (!quit) {
        run(fd.getTitle(), fd.getMode(), dirname, filename,
                fd.getFilenameFilter(), fd.isMultipleMode(), fd.getX(), fd.getY());
    }
}
 

import java.awt.FileDialog; //导入依赖的package包/类
private static String[] askUser(ProgressWindow progress, String dp, String initialFileName, String a) {
    String ask = (a == null ? "What do you want to call this file?" : a);

    String[] s = new String[2];
    FileDialog dialog = new FileDialog(progress, ask, FileDialog.SAVE);
    dialog.setSize(400, 300);

    dialog.setDirectory(dp);
    dialog.setFile(initialFileName);
    dialog.show();
    String temppath = dialog.getDirectory();
    String chosenFileName = dialog.getFile();
    if (chosenFileName == null) {
        progress.setText("User Cancelled", FileProgressWindow.BAR_1);
        return null;
    }
    s[0] = temppath;
    s[1] = chosenFileName;

    return s;
}
 

import java.awt.FileDialog; //导入依赖的package包/类
public void actionPerformed(ActionEvent event) {
	FileDialog dialog = new FileDialog(SnakeGameFrame.this, "Open",
			FileDialog.LOAD);
	dialog.setVisible(true);
	String dir = dialog.getDirectory();
	String fileName = dialog.getFile();
	String filePath = dir + fileName;

	if (fileName != null && fileName.trim().length() != 0) {
		File file = new File(filePath);
		panel.loadGameDataFromFile(file);
		startMI.setEnabled(false);
		pauseMI.setEnabled(true);
	} else {
		JOptionPane.showConfirmDialog(SnakeGameFrame.this,
				"�ļ���Ϊ��\nװ����Ϸ����ʧ��", "̰������Ϸ", JOptionPane.DEFAULT_OPTION);
	}

}
 

import java.awt.FileDialog; //导入依赖的package包/类
public static File showSaveDialog(Frame f,String title,String extension) {
	if(extension.startsWith("."))
		extension = extension.substring(1);
	
	FileDialog fd = new FileDialog(f, title);
	fd.setMode(FileDialog.SAVE);
	fd.setFilenameFilter(new SuffixFilenameFilter(extension));
	fd.pack();
	fd.setLocationRelativeTo(null);
	fd.setVisible(true);

	String s = fd.getFile();
	if(s==null)
		return null;
	
	if(s.toLowerCase().endsWith("."+extension)) {
		return new File(fd.getDirectory() + s);
	}
	
	return new File(fd.getDirectory() + fd.getFile()+"."+extension);
}